Dear ____(last name of friend) family,
It is within my deepest regards that I thank you for granting me a place to stay over the holidays. It is impossible to describe the gratitude I feel for your kindness. ____(friend’s name) and I shared many incredible moments during my stay at your beautiful home; moments I will forever cherish in the form of fond memories.
How have you guys been faring since I left? Has ____ (friend’s name) gotten into anymore accidents since I left? If they have, please remind them to take it easy and to stay away from any glass doors for a while.
In short, I hope you all are getting on well! I appreciate your generosity beyond that which is comprehensible to the human mind. I look forward to seeing you all again soon!
Best regards,
________ (your name)